Roof Cleaning – The Steps To Remove Roof Stains


When it comes to roof maintenance, proper roof cleaning is paramount. With time, you will start noticing fungus spreading across your roof or turning black. Well, some algae spore stains and growth are simply cosmetic, while others such as moss will cause serious roof damages. As such, to keep your roof safe and attractive, you should consider cleaning it. To do this, choose a cool, cloudy day; mix your cleaning solution and spray it onto the roof. Then wait for 20 minutes before rinsing. 


Part One: Making Preparation For Chemical Cleaning

STEP 1

Choose a cool and cloudy day to perform shingles deep cleaning. Remember, sunlight, and warm weather will make the cleaning solution to dry fast, making it useless. Also, the day should not be windy. Remember, the wind will also make the solution to dry fast or brow it away. 


STEP 2

The next step is performing a few roof maintenances. This step is important in repairing loose shingles and flashings, which decreases roof damage. Do not forget cleaning downspouts and gutters as well. That is because you need the cleaning solution to drain off when rinsing. 


STEP 3

Protecting your yard is the next step. Move any furniture away from the working area. It is important to cover your yard if you are using a bleach solution. Also, it is wise to rinse down your plains and lawn with water before starting the deep cleaning. The reason behind this action is the dilution of harmful bleach that may have found its way into the plants. After watering the plants, cover them with plastic to catch any spray. 


STEP 4

Protecting your yard is the next step. Move any furniture away from the working area. It is important to cover your yard if you are using a bleach solution. Also, it is wise to rinse down your plains and lawn with water before starting the deep cleaning. The reason behind this action is the dilution of harmful bleach that may have found its way into the plants. After watering the plants, cover them with plastic to catch any spray. 


Part Two: Cleaning Moss And Algae

STEP 1

Mixing the solution is the first step. Although there are many specialized, eco-friendly roof cleaning solutions on the market, they are often expensive. The good news is that a home cleaning solution can be made with just a gallon (3.8L) of water and quart (.95L) of normal laundry bleach. The other option is a quarter cup (177.5mL) of non-ammonia heavy cleaner like Trisodium Phosphate (TSP) for extra cleaning punch. 

NOTE: Bleach is acidic to both plants and the roof. For this reason, the bleach mustn't exceed 50% of your cleaning solution. 

Also, lye products are effective at roof cleaning. However, they are corrosive to the skin, causing skin irritation and damage. As such, one must wear protective gear before handling it. 


STEP 2

The next step is soaking the shingles with water. You can achieve this easily by using a water sprayer or normal garden hose. Wet the shingles carefully and start at the bottom. This technique will prevent your solution from drying immediately after the application. The moment you see runoff, stop.


STEP 3

Spraying your solution is the next step. Using a sprayer, coat the shingles with the solution while using slow and even strokes. Make sure that you do not miss any spot; otherwise, you will make your roof become spotted. Let the solution soak for 15 to 20 minutes. 


STEP 4

Ringing the solution is the next step. It is wise to use a water sprayer as it applies enough force that will dislodge moss and algae without damaging the shingles. A garden hose may be enough when it comes to a lightly stained roof. Remember to move slowly.

Note: Power washers should never be used. That is because they will wear the shingles. 

STEP 5

Reapply the solution is the last step. You will have to reapply the solution for deep stains. Before reapplying the solution again, let it dry first. After this, wet it and then reapply the solution using the same method as before. If light stains are left, worry not because they may be washed away as long as rain and sunlight can reach the area. 

You can use a broom to scrub the cleaner off. The broom must have soft or medium-hard bristles, and to avoid damage to the shingles, apply little pressure. 


Part Three: Preventing Moss And Algae

STEP 1

Clean your roof regularly. It is important to note that leaves and branches provide a moist environment for algae and moss to thrive. As such, dead leaves should be picked up or swept off the roof regularly. Do not forget to clean the gutters as well to allow water to drain freely. Doing this prevents roof stains from forming.


STEP 2

Trim near roof branches to prevent creating a cool shady environment where moss and algae thrive. Sunlight discourages algae and moss spores from taking hold. 


STEP 3

Consider applying a stain blocker. Stain blockers are affective at preventing stains from taking hold for up to 3 years. You will find these products at any home improvement store. Stain blockers should only be applied after cleaning the roof. Also, follow the manufacturer’s directions. 


STEP 4

Consider placing metal strips under shingles. Such metals can be found at home improvement stores, which are placed under shingles, which are wither of copper or zinc. They pay a huge role in preventing moss and algae spores from growing. 

NOTE: installing these metal strips may puncture sealants on shingles. As such, it is wise to place them when installing a new roof.